Sinn Fein's Gerry Adams and Martin McGuinness have also spoken at the venue, which was booked by Ukip's Northern Ireland branch.

Woolfe's speech, on the European Union and migration, was moved to a different venue.

A spokesman for Ukip blasted the cancellation, saying: "This is a blatant attempt to stifle democratic expression of a legitimate national political party representing four million people across this country."

GETTY

Steven Woolfe at a Ukip conference with leader Nigel Farage

GETTY

Sinn Fein's Gerry Adams was allowed to speak at the venue

And Mr McNarry, leader of the party in Northern Ireland, accused the centre of "shockingly unprofessional" behaviour.

He said: "We booked the building over a month ago and have been in constant contact with them.

"No later than yesterday [Thursday] at 3pm my staff were in Skainos with Skainos staff working out the seating arrangements.

"Skainos suggested we put the seats in a U-shape and we settled on the amount of tea, coffee and biscuits."

GETTY

Mr Woolfe is the Eurosceptic party's migration spokesman

Before the event, Mr Woolfe, the party's migration spokesman, said: "I am looking forward to speaking to the people of Northern Ireland, who the majority like me, want a Better, Prouder and Freer United Kingdom.

"With the work of the team we have in Northern Ireland, not only is the party making fantastic progress, but also the Eurosceptic movement itself."

The Skainos Centre has not responded to requests for comment made by Breitbart London.